Comparison of the Effect of Copenhagen Adduction Exercises Performed at Different Load-intensity

Comparison of the Effects of Copenhagen Adduction Exercise Performed at Different Loading Intensities on Hip Muscle Strength Development, Delayed Muscle Soreness, and Lower Extremity Physical Fitness Parameters

The aim of our study is to compare the effects of the Copenhagen adduction exercise, performed at different loading intensities, on hip muscle strength development, performance, flexibility, and delayed onset muscle soreness. The study will include active taekwondo athletes between the ages of 12-18. Athletes will be randomly divided into two groups: a low-intensity Copenhagen Adduction exercise group and a high-intensity Copenhagen Adduction exercise group. Athletes in both the low-intensity and high-intensity exercise groups will perform the exercise for 8 weeks in addition to their regular training program. At the beginning of the study and at the 4th, 8th, and 16th weeks, assessments will be conducted for hip abductor and adductor eccentric and isometric muscle strength, flexibility of the hip adductors, level of delayed muscle soreness, single-leg jump test, and timed lateral hop tests. The outcome of our study will determine how much improvement is achieved in hip muscle strength and lower extremity physical fitness parameters during and after the application of the Copenhagen adduction exercise at different loading intensities.

Study Overview

• Status: Recruiting
• Conditions: Groin Injury
• Intervention / Treatment: Other: High-intensity Copenhagen adduction exercise; Other: Low-intensity Copenhagen adduction exercise

Detailed Description

The study is a single-blind randomized controlled trial including male and female adolescent taekwondo athletes (12-18 years). Evaluators will be blinded to which group are assessing.

Participants will be recruited from the local sports clubs. Club coaches will be asked to invite club players. Players interested in participating in the study will be asked to attend a meeting where the study will be explained to them. Those who were interested will then be assessed for inclusion and exclusion criteria.

Interventions:

Sports clubs are allocated to the high-intensity Copenhagen adductor exercise group (HCAE) or the low-intensity Copenhagen adduction exercise group (LCAE). Athletes in both the low-intensity and high-intensity exercise groups will perform the exercise for 8 weeks. Athletes in the HCAE group will perform the classic Copenhagen adduction exercise protocol and at LCAE group will perform the modified Copenhagen adduction exercise protocol.

Testing procedure:

The following tests will be performed before the exercise and 4th - 8th - 16th weeks after the beginning of the exercise.

The isometric and eccentric strength of the hip adductors and abductors Hip adduction flexibility Single-leg hop test Side hop test

A 10-point visual analog scale will be used to record the level of muscle soreness and rate of perceived exertion experienced after each training session.

• Study Type: Interventional
• Enrollment (Estimated): 30
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Ezgi Unuvar-Yuksel; Phone Number: +905078337676; Email: unuvarezgi@gmail.com
• Study Contact Backup: Name: Özlem Ulger, proffesor; Phone Number: +903123051576; Email: ozlemulger@yahoo.com

Study Locations

• Turkey
  • Altındag
    • Ankara, Altındag, Turkey, 06100
      • Recruiting
      • Hacettepe University
      • Contact: Ezgi Unüvar; Phone Number: 05078337676; Email: unuvarezgi@gmail.com

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Child; Adult
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• Being between the ages of 12-18
• Having a minimum of 3 years of experience as a taekwondo athlete
• Not having experienced any back, hip, or groin injuries in the last 12 months
• Participating in training sessions at least 3 days a week
• Being available to attend exercise training for 8 weeks

Exclusion Criteria:

• Having had a lower extremity orthopedic injury within the last 3 months
• Having an injury related to the hip and groin region
• Reporting a pain level of 4 or higher on the visual pain scale during the adductor squeeze test and palpation of the adductor muscles

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Screening
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: high intensity copenhagen adduction exercise group; Athletes in the high-intensity copenhagen adduction exercise group will perform classic copenhagen adduction exercise protocol.	Other: High-intensity Copenhagen adduction exercise; Copenhagen adduction exercise is an eccentric strengthening protocol of hip adductors and suitable for groin injury prevention and rehabilitation.
Experimental: low intensity copenhagen adduction exercise group; Athletes in the low-intensity copenhagen adduction exercise group will perform a modified copenhagen adduction exercise protocol.	Other: Low-intensity Copenhagen adduction exercise; Copenhagen adduction exercise is an eccentric strengthening protocol of hip adductors and suitable for groin injury prevention and rehabilitation.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
hip muscle strength	isometric and eccentric hip adductor and abductor muscle strength will assess with a hand-held dynamometer.	beginning and 4th-8th-16th weeks after beginning

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
lower extremity performance	single leg hop test and side hop test	beginning and 4th-8th-16th weeks after beginning
hip adduction flexibility	hip adduction range of motion will assess with a goniometer.	beginning and 4th-8th-16th weeks after beginning
delayed onset muscle soreness	delayed onset muscle soreness will assessed with visual analog scale.	immediately after each exercise session, through 8 weeks
rate of perceived exertion	rate of perceived exertion will assessed with BORG CR10 scale(Borg Rating Of Perceived Exertion).	immediately after each exercise session, through 8 weeks

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
exercise compliance	participation status of all exercise session (%)	immediately after each exercise session, through 8 weeks

Collaborators and Investigators

• Sponsor: Hacettepe University
• Investigators: Study Director: Hande Guney-Deniz, Prof, Hacettepe University

Study record dates

Study Major Dates

• Study Start (Actual): January 15, 2024
• Primary Completion (Estimated): June 15, 2024
• Study Completion (Estimated): July 15, 2024

Study Registration Dates

• First Submitted: October 12, 2023
• First Submitted That Met QC Criteria: October 26, 2023
• First Posted (Actual): October 27, 2023

Study Record Updates

• Last Update Posted (Actual): June 5, 2024
• Last Update Submitted That Met QC Criteria: June 4, 2024
• Last Verified: June 1, 2024

More Information

Terms related to this study

• Other Study ID Numbers: copenhagentkd2023

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No